For my exceptioanally timid beagle(also afraid of ALL noises from storms, rocket launches, car doors slamming, people, etc.), my vet has her on a combo of 2 100mg gabapentin twice daily and 1/2 tab 20-mg fluoxetine daily. She is 25 pounds. She is not a zombi but still doesn't like to be outside for long. Ask your vet about this combo.